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From:   Naresh Kamboju <naresh.kamboju@linaro.org>
Date:   Mon, 10 May 2021 16:35:48 +0530
Message-ID: <CA+G9fYu7h+XBKvC=j7AFNr5tTmNUYWfDWoEEHHf34Gm2jcQoxg@mail.gmail.com>
Subject: Re: Unhandled fault: imprecise external abort (0x1406) at 0x00000000
 - PC is at xhci_hub_control
To:     linux-usb@vger.kernel.org,
        open list <linux-kernel@vger.kernel.org>,
        lkft-triage@lists.linaro.org
Cc:     peter.chen@kernel.org, jackp@codeaurora.org,
        NXP Linux Team <linux-imx@nxp.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        mathias.nyman@intel.com, Li Jun <jun.li@nxp.com>
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On Mon, 10 May 2021 at 16:22, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
>
> On Mon, 10 May 2021 at 16:02, Naresh Kamboju <naresh.kamboju@linaro.org> wrote:
> >
> > The kernel crash reported on arm architecture BeagleBoard-X15 device running
> > Linux next 5.13.0-rc1-next-20210510 while booting the device.
> >
> > [    4.956085] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
> > [    4.961639] xhci-hcd xhci-hcd.1.auto: new USB bus registered,
> > assigned bus number 2
> > [    4.969360] xhci-hcd xhci-hcd.1.auto: Host supports USB 3.0 SuperSpeed
> > [    4.976165] usb usb2: We don't know the algorithms for LPM for this
> > host, disabling LPM.
> > [    4.985321] hub 2-0:1.0: USB hub found
> > [    4.989196] hub 2-0:1.0: 1 port detected
> > [    5.002197] Waiting for root device
> > PARTUUID=6b10e805-12ad-b44e-88b8-3abf3d5f52ed...
> > [    5.022918] 8<--- cut here ---
> > [    5.026000] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
> > [    5.033root
> > 081] pgd = ff6a1748
> > [    5.035797] [00000000] *pgd=00000000
> > [    5.039398] Internal error: : 1406 [#1] SMP ARM
> > [    5.043975] Modules linked in:
> > [    5.047027] CPU: 0 PID: 22 Comm: kworker/0:1 Not tainted
> > 5.13.0-rc1-next-20210510 #1
> > [    5.054809] Hardware name: Generic DRA74X (Flattened Device Tree)
> > [    5.060943] Workqueue: pm pm_runtime_work
> > [    5.065002] PC is at xhci_hub_control+0xd00/0x248c
> > [    5.069824] LR is at arm_heavy_mb+0x44/0x48
>
> Since, this crash is not easily reproducible I could bisect it.

sorry, i mean i could *not*

Since, this crash is not easily reproducible I could not bisect it.

- Naresh